Advertisements
Advertisements
Question
Yazhini scored 15 out of 25 in a test. Express the marks scored by her in percentage
Advertisements
Solution
Yazhini’s score = 15 out of 25
= `15/25`
Score in percentage = `15/25 xx 100%`
= 60%
APPEARS IN
RELATED QUESTIONS
Gunpowder contains 75% nitre and 10% sulphur. Find the amount of the gunpowder which carries 9 kg nitre. What amount of gunpowder would contain 2.3 kg sulphur?
The cost of an article is first increased by 20% and then decreased by 30%, find the percentage change in the cost of the article.
Two numbers are respectively 20 percent and 50 percent more than a third number. What percent is the second of the first?
Express the following percentage as a fraction and as a decimal number:
5 %
Express the first quantity as a percent of the second:
500 gm, 6 kg
The price of an article increased from ₹ 16 to ₹ 20; find the percentage increase.
If 48% of 48 = 64% of x, then x =
Sunscreens block harmful ultraviolet (UV) rays produced by the sun. Each sunscreen has a Sun Protection Factor (SPF) that tells you how many minutes you can stay in the sun before you receive one minute of burning UV rays. For example, if you apply sunscreen with SPF 15, you get 1 minute of UV rays for every 15 minutes you stay in the sun.
A label on a sunscreen with SPF 30 claims that the sunscreen blocks about 97% of harmful UV rays. Assuming the SPF factor is accurate, is this claim true? Explain.
A student used the proportion `n/100 = 5/32` to find 5% of 32. What did the student do wrong?
Express 45 out of 100 as a percentage.
